Smoke alarm



FIG. 1 is a top view of a smoke alarm with a two-slit-cap, showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a another side view thereof;

FIG. 7 is a top view of another embodiment of the smoke alarm with a two-slit-cap;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front view thereof;

FIG. 10 is a side view thereof;

FIG. 11 is a rear view thereof; and,

FIG. 12 is a another side view. 

The ornamental design for a smoke alarm, as shown and described. 